Bat and ball game (8)
(Other definitions for cricket that I've seen before include "Insect with long leg" , "little creature" , "short leg seen on this field?" , "Six-footer" , "English game or chirping insect" .)
'bat and ball game' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for rounders that I've seen before include "Bat-and-ball game" , "Game similar to baseball" , "Game like baseball" , "Baseball for kids?" , "Game resembling baseball" .)